4x+4y=16;-9x+y=4

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x+3y=14

Solution for 4x+4y=16;-9x+y=4 system of equations: 


  • /| 4*x+4*y-16 = 0| y-9*x-4 = 0
  • We try to solve the equation: 4*x+4*y-16 = 0
  • 4*x+4*y-16 = 0 // - 4*x-16
  • 4*y = -(4*x-16) // : 4
  • y = (-(4*x-16))/4
  • y = (16-(4*x))/4
  • We insert the solution into one of the initial equations of our system of equations
  • We get a system of equations:
  • /| (16-(4*x))/4-9*x-4 = 0| y = (16-(4*x))/4
  • (16-4*x)/4-9*x-4 = 0
  • 4-10*x-4 = 0
  • -10*x = 0
  • -10*x = 0 // : -10
  • x = 0
  • We insert the solution into one of the initial equations of our system of equations
  • For y = (16-(4*x))/4: 
  • y = (16-(0*4))/4
  • y = (0+16)/4
  • y = 16/4
  • y = 4
  • We get a system of equations:
  • /| y = 4| x = 0

 

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